Few people have the ability to teach electronics in an understandable way. You broke everything down into manageable bites. You didn't take for granted that I already knew something. I've always wanted to learn about electronics but many people over complicate their explanations. I subscribed just because I wanted to see if more of your videos were so clear and concise.

@f.a3202

5 жыл бұрын

Nice profile picture! You got me

@BillAnt

5 жыл бұрын

Excellent video tutorial... and hope he makes a few bucks along the way. ;D

@mikegleasonjr

5 жыл бұрын

@@BillAnt bucks converters are indeed covered in another video 😂

@BillAnt

5 жыл бұрын

@Mike Gleason jr Couturier < Jokes aside, I really meant "...makes a few bucks..." he-he

@sandermez3856

5 жыл бұрын

manageable bites or bits? im confused...

1 Question: Where have your videos been all my life? I've always wanted to learn electronics but there is so much junk on the internet with poor guidance. Your videos are so easy to understand and the knowledge gleaned from a single 10 minute video of yours is worth hours of normal research and headaches.

@lilliampumpernickel9916

8 жыл бұрын

this is so true, i just found this channel

@kayodeoloruntola9032

8 жыл бұрын

you guys are so fantastic keep it up

@johnlbales2773

7 жыл бұрын

Same here! Thanks Afro! U R Awsome!

@emamsajid

7 жыл бұрын

KAYODE OLORUNTOLA k

@frankdavidson9675

Жыл бұрын

you can buy books on line teaching basic elec and eletronics very basic but good ground work

"Straight to the point electronics tutorial videos with practical examples". I AGREE! thumbs up.

I've enjoyed playing with electronics for over 45 years & these are great refresher videos. Thanks for sharing.

I am watching a number of your tutorials. Very well spoken, well written and informative. This is exactly the type of lessons I am looking for. Well explained also. I like how much you explain about why (such and such) occurs.

@BillAnt

5 жыл бұрын

The difference in clarity and quality of this video compared to some others, is like night and day. Clearly flowing thought pattern, no mumbling and pausing, throat clearing, with a dash of well placed good humor in between. #Winning! :)

This is a great educational video. I learned a lot from your series on Power Supplies. Thank you for the comprehensive coverage of all the concepts and parameters. That's the proper way to learn instead of people simply demoing their work with inadequate explanation on how it works. You are a great teacher, paying attention to the content you're communicating. It's very fun listening to your videos. Thank you very much again for sharing your knowledge with the world.

To this day I still use this configuration for my 7805 power supplies for TTL circuits. A very useful video if there ever was one. Thanks very much for taking the time and effort to make this video and post it. Cheers.

Your narration is wonderfully clear. Never boring nor over the top.

Thank you. The concepts on diodes through voltage regulators are mentally-sequenced so very well. It's motivational since it leaves you wanting to do things just that much better for just a few pennies sometimes.

@mxcollin95

7 жыл бұрын

G O'LastName Well said! I wish this dude was my electronics instructor or had a full electronics video coarse available! I'd buy it in a heartbeat!!! As always, great job afrotech 👌👍

@mxcollin95

7 жыл бұрын

Whoops...video 'course'...I meant to say.

207 people have no idea what and outstanding video is. Thumbs up from me.

@Afrotechmods

8 жыл бұрын

+Kris Kasprzak Thanks bud!

@Grenplen

8 жыл бұрын

+Afrotechmods Hi! I have a Alpine 4-channel amp. Chan 2 is out.No sound But when I incresed the volume all i hear is cracking distorted sound. I opened the amp up found no burn Mosfet. What could be the problem? Any help is appreciated. Thanks!

@talahhussain2867

8 жыл бұрын

+Bouboune The problem is that or amplifier output wattage is higher than the wattage of your speakers

@iprofessionalamateur

8 жыл бұрын

its gone up to 253

@Mindthegap720

7 жыл бұрын

i love his humor and thats what makes the video more fun to watch.

Wow this was uploaded almost 9 years ago. Oh God people like you make the world a better place.

this dude made these kind of amazingly educational videos 8 years ago and in 1080p!

This is an EXCELLENT video. Thank you for being so organized and informative! Showing the specs was especially helpful and talking about Dropout and Efficiency...just great!

@michaczarnocki181

3 ай бұрын

i like your pfp

I've discovered that if you put the load between the input and output pin, you can use it as a voltage substractor, usefull for a cheap gauge indicator for 12v batteries

I thought I've watched some good tutorial videos on electronics but these are steps up. Brilliant.

such clarity in delivering the information is rare. Another great one

YES finally i found a simple straight forward tutorial!!! THANK YOU SOO MUCH

OK!!! I 'M SEARCHING THIS TWO YEARS!!!! THANKSSSSSSSSS !!!!!!!!!!!

Because of your tutorials, I have a much better understanding of electronics. I'm self-taught out of a desire to modify and improve my cheap Chinese tools. However, this has led me down the "rabbit hole". Thank you so much for your guidance.

I think i watch this again after almost 4 years and it is still gold, thanks

Very nicely explained, I've learned quiet a lot from your video. Thank you

brilliant video! learnt a lot very clear and easy to follow many thanks!!

great vid! helped me immensely. great to SEE ppl helping others with their comments instead of being nasty towards them.

thank you! we built one of these things in class today and without explanation of what we were building. thank you for being very clear what it does! :)

How do you know that you need a 10mikro Farad capacitor. Is there a formular to calculate the capacity of capacitors to a different project for example?

@Afrotechmods

7 жыл бұрын

Capacitors can be used in tons of different situations and the formula to use will depend on the situation. 10uF for a linear regulator is just a generally good guideline value. The best way to find out the value for your situation is to google for the datasheet of the component you are using. It will either show you the formula or give you the recommended value.

@cda32

7 жыл бұрын

It depends on the regulator, the current draw, and filtering requirements which remove high frequency transients and voltage spikes from the load. The datasheet for the regulator provides the details for what smoothing and filter capacitors to use in various configurations.

@rohitsimonskylarrohitsimon1608

7 жыл бұрын

Survival Lilly

@MarkTillotson

6 жыл бұрын

Read the datasheet for the regulator you actually use, especially for low-dropout ones. Datasheets have specific information for the actual device so are the definitive source of information.

@johnepperson8867

6 жыл бұрын

Fancy seeing you here Lilly!!! Love your videos!!!!

Woohoo! I made it! Thanks Afro

@Afrotechmods

4 жыл бұрын

🎉

This is the best possible short description of LM voltage regulators.

Great tutorial. Happy Thanksgiving. I'm thankful for smart people sharing ideas.

You had me at, "Pffft! Progress."

Great video Thank you for taking the time to teach us. By the way the people who disliked this video are provably those who paid the $30 for a charger. lol

@claystudiofx

7 жыл бұрын

or maybe , they think that 10uf capacitor is a can of coke.

Wow, I just learned something! What an excellent, clear explanation. Hats off to you, sir!

This video was a revelation to me! Well explained and easily understood! Thanks!

Your all videos are superb, easily understandable. Keep it up!

0:29 Where do you source your Durasmells? The source I've been using stinks :)

built one of these last night, you sir are a legend.

Your explanations are so clear, awesome presentation man!!! Thank you.

Quick question. I know that some devices are trickier to charge (e.g. Apple Iphone from what I heard). Can you charge android tablets by supplying it with 5v or is it a little bit more trickier? Also it would be awesome if you could talk about switching regulators. They more efficient and can handle a larger voltage range than linear regulators.

@wax147

10 жыл бұрын

you can charge apple devices if you short out the data pins with a 50k ohm resistor. google it.

" i cant even show you one that catchs on Fire prfff porgress" hahahahahahah

First video i've ever seen of yours. Excellent stuff. Subscribed.

2 mil. views in 6 yrs. and climbing, good going. Great delivery!

Oh no, you can't show one catching fire? What would your channel be if all components were thermal regulated?

your voice is amazing

@talhajhon8077

4 жыл бұрын

Gay you

@gilbertomartinez6981

4 жыл бұрын

In another youtube channel “chinese cooking demystified” sounds like he might be the same person 🤔 very clear and informative tutorials in both

Thankyou. drop out voltage is exactly what I was looking for an explanation of. I love you.

Thank you so much for such an easy to understand and professional video. :)

This is a very informative tutorial video. You are so clear in your explanations that I easily understood without breaking a sweat. Good work!

@Afrotechmods

Жыл бұрын

Thanks!

78s are positive regulators while 79s are negative.

@i8tweak

9 жыл бұрын

RiaRadioFMHD773 Thanks for the tip!

@j5892000

7 жыл бұрын

haha i see what you did there.

@leonamferreira8053

7 жыл бұрын

thx a lot!

@vigneshwaran-1

6 жыл бұрын

thank u

@rishikkumar7417

6 жыл бұрын

Can u plz explain the use of 79s

Thanks this is perfect for what I needed to know when powering multiple arduinos and their built-in regulators. was afraid of frying some components.

Google is my best friend, one of my mantras to my students. Nice presentation. Keep broadcasting!!

I am confused about the function of the 0.1 uF capacitor. I understand a voltage ripple reducing circuit that uses two capacitors with a series resistor between the + leads in series with the current flow; but when you put two capacitors together in parallel as shown - they just add their capacitance. Right ? So isn't the circuit as shown the same as just one capacitor at a value of 10.1 uF ?? and how is 10.1 uF any different than a single 10 uF capacitor - really ? Thanks for any info you can provide !!

@Afrotechmods

9 жыл бұрын

Donald Filbert The 0.1uF cap is made with a different dielectric - it is a ceramic cap. The 10uF cap is an aluminum electrolytic cap. Ceramic caps work much better at higher frequencies. The 10uF cap would be useless at dealing with noise at 100+kHz.

@donaldfilbert4832

9 жыл бұрын

Afrotechmods Cool !! Thanks for the response and info !!!

@kreynolds1123

8 жыл бұрын

+Afrotechmods To the important in difference in dielectric is their ESR, Equivalent Series Resistance. In this circuit, ceramic's lower ESR helps the capacitor smooth higher frequencies.

@DeLaCruzer11

6 жыл бұрын

+Afrotechmods so the purpose of that 0.1 uF ceramic capacitor is to further smooth out ripple in the output cause by higher frequencies noise?

@Evocatorum

6 жыл бұрын

Correct. If you go back and look at the Osciloscope, you can see that there is some noise in the output voltage. The 10uF and the 0.1uF capacitors help to clean up this signal. If the original author were to hook up another probe to the board on the output side of the capacitors (or even just move the probe) we would see a near flat output voltage from the circuit.

@3:30 Its called retail.. Youre right though. There is a reason the middle man is slowly but surely being cut out.

You are amazing. I'm in love with these videos!

Awesome video! Very informative yet not overwhelming. Thanks!

Hi: I know that this is an old video, but I still have a question. When you already put a capacitor on the output, why did you have to add a .1uf ceramic capacitor also? Why a ceramic, and why so low amount and why not just up the 10uf electrolytic if you needed more. Thanks for your time and great videos.

@enriquephan7729

8 жыл бұрын

I have the same question, what would happen if there werent any capacitors? or If there werent one of those...

@enriquephan7729

8 жыл бұрын

So, they act as a noise filter? And the capacitance determinates the frequency they filter, right?

@enriquephan7729

8 жыл бұрын

Sebas Eu Thanks! I will do a deeper research to fully understand the topic.

@deelan_

8 жыл бұрын

+Kique Phan Razquin Without Caps The curcuit wont be very stable. Its like using an LED. When you have an Voltage of 4v, you can theoratically connect a LED direct to it. But its still better to use a Resistor. Also i heard, that the Efficency suffers without caps. But if you dont care about Efficency, you can use it without caps. But i think everyone you will ask, will recommend you to use an 78xx with caps

@cipher-1

7 жыл бұрын

AntoniRockReykern I think this is for reject the noise at 50 or 60 Hz. This is why to use 100nf capacitor

How do you calculate the capacitance needed for the three capacitors?

@petermcarthur7450

8 жыл бұрын

You look up the minimum recommended value on the datasheet.

@theSoberSobber

6 жыл бұрын

Thoughtyness C=I*T/V

Your Tutorial's, are a 'godsend'. Very Informative and so easy to understand, Clear and precise and in such a way as, even a beginner would understand. Your emphasis to detail, 'all and everything', makes it, an all the more an enjoyable process to learn electronics skills Theory. I wish my Lecturers' Could have had, the emphatic qualities that can be observed by, viewing Your Tutorials. Sincerest Thanks.

Best explanation so far, now I can start working on those BBD Delays, Echos, and Choruses without frying my BBD Chips.

Durasmell?

@johnnysharp1970

6 жыл бұрын

Krists Jāvalds Duracell "rip-off"

3:30 LMFAO nice!

@Purple431

3 жыл бұрын

3:30 lol

@someguyontheinternet-

3 жыл бұрын

Lmfao

@Purple431

3 жыл бұрын

@@someguyontheinternet- haha lol

Still relevant many years later. Thank you.

I learned so much, this was really helpful. Thank you :)

Does it matter what capacitor (electrolytic, film, ceramic) is used?

@haraldkongen

9 жыл бұрын

Kyle LaFountaine Yes

@kreynolds1123

8 жыл бұрын

+Kyle LaFountaine yes, and no. That depends on your voltage regulation needs. In this circuit, ceramic's lower Equivalent Series Resistance helps the capacitor smooth higher frequencies, while the electrolytic capacitor is cheaper to provide the farads to smooth out lower frequency oscillations.

What screw do I need for that?

@DavidTurnell

8 жыл бұрын

+Bob “bobdabiulder” dabiuld Anything that gets your nuts off - come down to Brazil and try a tranny.

clean, clear, simple, 10/10 - thank you

Very concise. Thanks. Glad you mentioned the minimum dropout voltage.

I'm so furious that i didn't understand the 0.1 micro farad capacitor. Why is it there? I read most of the comments, no one bothered to wonder. I just... can't... Why? What am i missing?

@Afrotechmods

9 жыл бұрын

The material used to make the 0.1uF cap (the dielectric) is ceramic, which is different to the dielectric of the 10uF cap which is an aluminum electrolyte. This means the two capacitors have different performance at different frequencies. The 0.1uF ceramic cap is best at filtering out high frequency noise whereas the 10uF cap will be useless for that.

@luongmaihunggia

6 жыл бұрын

Write "I will use google before asking dumb questions" 100 times for me.

@MarkTillotson

6 жыл бұрын

Generally you don't need the ceramic cap at the regulator, as each chip you're suppling has its own ceramic decoupling capacitor close to its supply pin. Yes the ceramic cap will handle events on the timescale of nanoseconds which is the speed of logic chips.

@johnepperson8867

6 жыл бұрын

There are NO "dumb" questions!

@JBattler

6 жыл бұрын

hmmm not sure what the difference is in asking here than asking google except that asking it here makes more sense. The only dumb question is one that isn't asked or is asked despite it being answered in the article in question. The perception of "dumb" is based on level of knowledge when encountering a piece of information. A good well-thought-out tutorial will not leave these kinds of things hanging. 'Tutors' are usually (not always on youtube unfortunately) well versed in their topics and can easily forget what watchers may or may not know so can easily miss/skip bits. This is a common problem for us beginner learners in any field. Otherwise this guy's videos are great!

So if I put in 1V then I get 5V out and dissipate minus watts! I can create free energy AND a fridge!

@syahrul9282

5 жыл бұрын

Lmao

@HappyBeezerStudios

5 жыл бұрын

Just if that woud work, the current would just go into the otehr direction :D

that is a truly excellent video. very clear, concise, and easily understandable. you have done me a service, thank you sir

Great teaching and straight to the point. Much appreciated...

Sadly, everyone always discusses 'USB chargers' and things of that milliamp ilk, but they never discuss when your input is 15v+/-2v ripple and your current is 90-amps. What do you do about actual amps? You can't just ignore 180 watts of dissipation, and you don't want that 'big as a buick' heat sink issue. What then, relays?

@TheSuraj03

10 жыл бұрын

I think they use multiple regulators with a combination of relays and forced cooling..

@PHRANQ2K2

10 жыл бұрын

Can you use just one regulator to control the base of several high current transistors? In a H-circuit arrangement perhaps?

@dustdevil317

10 жыл бұрын

Actually, there are more high-amperage regulators than most external-appliance milliamp regulators. It's call 'your car alternator', and there are hundreds of millions of them worldwide. Sadly, since not one single video was on KZread showing how something 12v and over 5-7 amps was regulated, I was lucky enough to get a schematic for an automotive regulator to see how they were handling the 'high amperage'. Quite simple, actually, and most do it for less than $20, case included.

@sth128

10 жыл бұрын

For high current (hell, any current really) applications you'll want to use switching voltage regulators instead of linear ones. The chips are super cheap and the circuits aren't really much more difficult, especially fix voltage ones. Look up buck-boost converter for voltage regulation. They are meant to regulate over and under voltages.

@HappyBeezerStudios

5 жыл бұрын

That is actually a good question. Looking for an air compressor that runs on 12V 7-10A but need a converter that runs off the wall. so those high loads are there.

What? I have a voltage regulator module that regulates to 5v usb with max. 3A. I've connected a 9v battery to this and my TABLET. The regulator didnt even get warm and my Tablet has charged as fast as is charged at its 2.1 A power Supply.

@Mixbag

8 жыл бұрын

LM1084 and its setup for 5v using resistors. my voltage drops from 5.20v to 3.30v when i connect a 2A load on it.. anyone help me solve this ? my power supply is 12v 20A and input voltage stay at a constant 12v and iv tried 2000uf cap on the output but still voltage falls iv used 4000uf also no change...and mobile phone stops charging under 5v

@PunakiviAddikti

6 жыл бұрын

Mix Bag Unless you're using an adjustable linear regulator, you can't set the output voltage using resistors. You need a 5 volt regulator with no resistors for 5 volts. If you need more power (aka more amps on the output), get a powerful buck converter.

I love your humor. You have made me laugh out loud several times.

Wow bro! That was cool, simple & made sense...please do more!

and I thought that it's a bipolar junction transistor all these years XD

@syaugi5748

4 жыл бұрын

Believe me, you're not alone

2:31 - how do I use google?

@traianima

5 жыл бұрын

in order use google you must make a 12 volt circuit with 2 transistors and a 4 diodes and a stepping motor, then just connect it at the computer. If you don't know how to make the circuit just google it.

@sonyobright2106

5 жыл бұрын

lol

@hycron1234

4 жыл бұрын

You jab a metal fork into a power socket. No seriously don't do that. 🙄

Old Vidio but just what I needed and just in time. Good teacher. Thank you Bob

Great video, I have used 78 series regulators on a lot of my projects and they have worked out very good, one of the things that you need to be aware of is when they get close to there dropout voltage there output can get very nasty. BTW I have that same Scope and I love it.

I don't like linear regulators

@mohamedtaha2025

5 жыл бұрын

why?

@electronicasaneesh82

4 жыл бұрын

@@mohamedtaha2025 rue it waste lot of power . use dc to dc converter. see my videos

@skirnir-atf

4 жыл бұрын

@@electronicasaneesh82 But fore audio LINEAR - best voltage regulator. DC-DC convertors produce a lot of noise.

Interested in learning about wireless power? Subscribers can get up to 80% off my course Wireless Power to the People - Wireless Charging 101 on udemy using the coupon code "KZread" www.udemy.com/wireless-power-to-the-people-wireless-charging-101/?couponCode=KZread

@bubblelaber4909

6 жыл бұрын

man i am a big fan despite of the fact that i came across your channel last night. The content that you offer is best worth my time. i wish i could donate to your work but here i am trying to find my place in this world.But hey big shout out to you.Peace bro.

Great video! Very informative and helpful. Thanks for making it!

Thanks for making the video, just helped me build one and fixed a canbus issue on a car 👍

You're one smart guy Afrotechmods.

Thank you. Well explained. Thank you for taking the time to make the video.

This is a brilliant video. thanks so much. explained in simple terms to help with a project

Excellent description & very helpful too ! Thank you so much Sir !

Excellent explanation - keep it up - looking more such informative videos

GREAT ! Thank you for touching on each detail that i wanted to ask a Q about, simple, Obvious even, but not to me. I going to look through all of your videos .

Well explained and easy to understand!

Awesome tutorials as always ^^

Simply brilliant piece of information......thanks for posting such a nice video.

Geat video! Thanks for breaking it down. I was blind but now I can see.

Thank you, I was wondering what I would need to turn a 7.2v NiMH battery into a usb charger for my ipod touch and cell phone, and you showed me. Thank you so much.

Wow! this is the video I'm looking for to learn with. Thank you!

Wow that helps me A LOT with understanding these...

You are great bro... Your explanation is outstanding....

Excellent description ,Thank you Sir !

You did a pretty good job. That was GREAT!

This is perfect! I'm making a bike charger for my cell phone and this is the perfect circuit to use. Thanks.

Very easy to follow, many thanks.

your videos are excellent!

Nice and simple explanation 👍🏽